Automatic relay discovery over Nostr + call-to-action

Relay operators announce their relay with -announcerelay=host:port; every node
discovers announced relays (kind 38502) and adds them to its failover list, so
volunteer relays join with no maintainer edit or approval. Anti-spam cap +
validation; relays are trustless (echan makes a bad relay unable to read/MITM).
README: automatic relay-volunteer guide, 'don't let the network die' section.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/ui.cpp b/src/ui.cpp
index cb1a94d..311a78e 100644
--- a/src/ui.cpp
+++ b/src/ui.cpp
@@ -2974,6 +2974,10 @@ bool CMyApp::OnInit2()
     if (mapArgs.count("/rvrelay"))
         vBtfMeetingRelays = { mapArgs["/rvrelay"] };
 
+    // Announce a relay you run so other nodes discover it automatically.
+    if (mapArgs.count("/announcerelay"))
+        strBtfAnnounceRelay = mapArgs["/announcerelay"];
+
     // Keep an anonymous outbound connection to a specific .btf peer.
     if (mapArgs.count("/connectbtf"))
         strBtfConnect = mapArgs["/connectbtf"];